build_changed_code.sh

#!/bin/bash
set -ex

if [ -z "$BITRISEIO_GIT_BRANCH_DEST" ]
then
    echo "No PR detected. Skipping selective builds."
    exit 0
fi

git fetch origin "$BITRISEIO_GIT_BRANCH_DEST" --depth 1

DIFF_FILES="$(git diff --name-only origin/${BITRISEIO_GIT_BRANCH_DEST})"

set +x
PATH_PATTERN=$(ruby -e 'puts ENV["TRIGGER_PATHS"].strip.split("\n").map { |e| e.gsub("/", "\\/") }.join("|") ')

echo "PATH_PATTERN: $PATH_PATTERN"
set -x

check_app_diff ()
{
    set +e
    echo $DIFF_FILES | grep -E $1
    exit_status=$?
    if [[ $exit_status = 1 ]]; then
      echo "No changes detected. Aborting build."
      curl -X POST \
        https://api.bitrise.io/v0.1/apps/$BITRISE_APP_SLUG/builds/$BITRISE_BUILD_SLUG/abort \
        -H "authorization: token $BITRISE_TOKEN" \
        -H 'content-type: application/json; charset=UTF-8' \
        -d '{
        "abort_reason": "Build skipped. No changes detected.",
          "skip_notifications": true,
          "abort_with_success": true
      }'
    else
      echo "Changes detected. Running build."
    fi
    set -e
}

check_app_diff "$PATH_PATTERN"

exit 0

jest_set_timezone.sh

#!/usr/bin/env bash -e

rm /etc/timezone   
rm /etc/localtime

TIMEZONE="America/Denver"      
export TZ="$TIMEZONE"
echo "$TIMEZONE" > /etc/timezone                     
cp "/usr/share/zoneinfo/${TIMEZONE}" /etc/localtime 
dpkg-reconfigure -f noninteractive tzdata

# mac
# sudo systemsetup -settimezone America/Denver
# sudo systemsetup -gettimezone

paths_to_rgx.rb

paths = [
  'rn/Teacher/',
  'CanvasCore/',
  'Podfile.lock',
  'Frameworks/SoAnnotated/',
  'Frameworks/Attendance/',
  'Frameworks/CanvasKeymaster/'
]

puts paths.map { |e| e.gsub("/", "\\/") }.join '|'

Add paths as env var in app settings. Must disable replace var in inputs, otherwise $ will be replaced.